SNAP-IV ADHD Screening
18 items on core ADHD symptoms
DSM-IV ADHD screening: 9 inattention + 9 hyperactivity items.
What Is the SNAP-IV?
The SNAP-IV (Swanson, Nolan, and Pelham-IV) is a behavior rating scale used to screen for ADHD based on DSM-IV (now DSM-5) criteria. It's widely used in schools and clinical settings to assess children and adolescents.
Structure
18 items divided into two subscales matching the DSM symptom domains:
- Inattention (9 items): careless mistakes, difficulty sustaining attention, doesn't listen, fails to finish tasks, disorganized, avoids sustained effort, loses things, easily distracted, forgetful
- Hyperactivity/Impulsivity (9 items): fidgets, leaves seat, runs/climbs excessively, can't play quietly, "on the go," talks excessively, blurts out, can't wait turn, interrupts
Psychometrics
- alpha > .90 for both subscales
- Test-retest reliability: .59--.82
- Moderate to strong convergent validity with other ADHD measures
Result Interpretation
After completing the 18 questions, you'll receive an immediate, detailed report with:
- Your score — calculated automatically based on your responses
- Score interpretation — what your score means in practical terms
- Context — how your results compare to general population norms where available
All results are displayed on screen. No account or login needed.